Back portion of a golf club head



FIG. 1 is a rear, elevational view of the back portion of a firstembodiment of the present invention on a driver-type club head;

FIG. 2 is a heel view thereof;

FIG. 3 is a toe view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is another rear, elevational view thereof highlighting thedouble-chevron pattern;

FIG. 6 is a rear, elevational view of the back portion of a secondembodiment of the present invention on a wood-type club head;

FIG. 7 is a heel view thereof;

FIG. 8 is a toe view thereof;

FIG. 9 is a bottom view thereof; and,

FIG. 10 is another rear, elevational view thereof highlighting thedouble-chevron pattern.

The broken lines showing portions of a golf club head in FIGS. 1-10 arefor illustrative purposes only and form no part of the claimed design.The showing of color contrast is for illustrative purposes only todelineate the contour of the double-chevron pattern, and forms no partof the claimed design.

The ornamental design for a back portion of a golf club head, as shownand described.